Throughout history, the building slab has been evolving and improving, both in terms of
construction techniques as the use of new materials. In the execution of building floors
as traditionally been used reinforced concrete in all its variants (prefabricated beams,
solid slabs, waffle slabs, hollow core, etc.) and have been used other materials such as
steel and wood. In this dissertation are shown in summary form, techniques and
procedures of calculation used in floors, differentiating between linear and nonlinear
computing system.
With the evolution of this dissertation will be shown a new material with great potential
structural, steel fiber reinforced concrete (SFRC) to build bidirectional slabs supported
directly on pillars or on walls, as an alternative to the use of reinforced concrete, thus
demonstrating its properties and characteristics in the stress - strain curve, also will
reveal its advantages and disadvantages for use in buildings.
The study is approached from the general form, analyzing all the information and
procedures availables and studied until today of steel fiber reinforced concrete, to the
specific form to the implementation of a numerical analysis of different solutions and
forged applications for obtain conclusions as concrete as possible.
As in design of reinforced concrete, first, we must determine the actions defined in the
regulations. After we determine the response of SFRC slab subjected to a load, for this
we use the plastic theory, since the incorporation of fibers in the concrete provides a
highly ductile and isotropic behavior. The ultimate load of a slab depends on its final
moment, their dimensions and the possible failure mechanism. The final moment
exhausting section is obtained by sectional analysis. For the latter procedure
experimental trials are needed to obtain test tubes of SFRC and residual tensile strength
of SFRC.
Finally, once you have acquired the necessary knowledge, raises a number of analysis
using forged theories explained for the dimensioning of SFRC sections. This dissertation
shows that it is entirely feasible the design and construction of two-way slabs using
reinforced concrete with steel fibers. Today there are not many experiences in the use
of this material in building floors, therefore, moving forward we must implement what is
known about the SFRC to perform better in the future.